Must-pump.



IMo. MBA-88. Patented Jan. 2, 1909. J. S. PHILPUTT.

W U S T P U M P (Application filed July 24, 1899f (W0 Model.)

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JAMES S. 'llllllPOTT, OF lVINDSOR, CALIFORNIA, ASSIGNOR OF ONE-HALE TOGEORGE A. NALLEY, OF SAME PLACE.

WIUS'II' PUMP.

SPECIFICATION forming part of Letters Patent No. 640,488, dated January2, 1900.

Application filed July 24, 1899. Serial 110,724,948. (No model.)

To ctZZ whom it may concern.-

Be it known that I, J Anus S. PHILPOTT, a citizen of the United States,residing at /Vindsor, county of Sonoma, State of California, haveinvented an Improvement in Must- Pumps; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

Elly invention relates to improvements in that class of pumps which aredesigned to move the express juice of the grape, called 1nust.

It consists in details of construction, which will be more fullyexplained by reference to the accompanying drawing, in which the figureis a sectional elevation showing a pair of pumps.

A A are two cylinders (here shown as vertically disposed) having a frame13 fixed thereto, and upon the top of this frame are journalboxes C, inwhich the crank-shaftD is turnable. Pistons are fitted to the cylindersA, and the piston-rods E are guided by passing through openings in thetransverse bar B of the frame. The upper ends of the connecting-rods Fare attached to. the cranks of the crank-shaft D, and the lower ends areforked, so as to extend down upon each side of the piston-rods E andconnect with them close to the piston by pins or bolts G, which passthrough the two parts of the forked connecting-rod and through anenlargement made in that part of the piston-rod just above the piston.

The piston itselfis composed of disks H,having an annular leather diskor packing I, one edge of which is clamped between the disks and theothencntendin g around the lower disk, is boltedthereto,sothatthepistonthusformed will work tight in the pump-cylinderand prevent leakage around the periphery. Through the disk H are madethe holes J around the central stem of the piston-rod which passesthrough the piston. This stem extends below the piston, and slidableupon it is a valve K of sufficient diameter to cover the circle of portsJ. lVhen the piston is raised, the liquid entering the cylinder fromabove passes through the ports J, forcing the valve K open and allowingthe must to pass into the lower part of the cylinder, and when thepiston is moved downwardly the valve K closes the ports J, and the mustbelow the piston is then forced through the discharge, as will behereinafter described. The edges of the valve K are made rounded and insuch a manner that where theysit against the bottom of the piston H theywill serve to cut any soft pulp or material which may lodge between thevalve and the face as it passes through the openings in the piston, andthe valve will thus be allowed to close to prevent leakage at thispoint. The discharge takes place vertically through a port L in thebottom of the cylinder and into a chamber 0, which is bolted directly tothe bottom of the cylinder and in line therewith.

The bottom P of the valve-chamber is bolted directly to a flange aroundthe bottom of the Valve-chamber, and is thus removable whenever it isdesired to obtain access to the in terior.

P is a conical extension from the inner portion of the head P,projecting up into the valve-chamber O, as shown, and having a centralhole, which forms a guide for the stem R of the valve S. This valve issemiglobular in shape and seats when closed against the bottom of theopening L, which is made divergentabove and below, as shown, to assistin the free passage of the must. A spring T surrounds the stem R and theguide-cone P and normally presses upwardly against the valve S, so as tocause it to close whenever pressure from above is relieved. The twovalves K and S thus act in a manner usual to pumps.

The discharge-passage U is at the side of the cylinder, and Where two ofthese cylinders are operated in unison the cranks upon the shaft D areplaced opposite each other, so that the pump-pistons are reciprocatedalternately and both discharge through the passages U into a commondelivery-pipe, which leads to the receiver. By thus placing thedischarge-pipe upon the side of the valveehamber O the bottom of thevalve-chamber and the valve can be at any time removed withoutdisturbing any of the other parts.

In order to prevent the guide-opening in P from becoming clogged orchoked with liquid, which would prevent the free movement of thevalve-stem R, I have shown holes 19 made in the bottom of theguide-sleeve P, so that any liquid which may be in the guide-openingwill freely discharge through these passages, and thus allow the valveto move without obstruction.

Where must-pumps are made with the ports in the sides of the cylinder,anything falling into the cylinder is very apt to get into the ports andcause obstruction; but by the arrangement here shown anything of thissortsuch as nails, wrenches, or other substances would simply fall uponthe piston and ride thereon without interference and can be removed atleisure.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a must-pump, open-topped cylin' ders, pistons movable in thecylinders and connected with a crank-shaft, from which they arereciprocated, ports through said pistons surrounding the center, aspring-pressed Valve closable from below over said ports, avalve-chamber bolted to the bottom of the cylinder, a passage throughthe bottom of the cylinder into said chamber, a spring-pressedupwardly-closingsemiglobular valve closable against the passage, saidvalve having a guide-stem from below and a conical vertically-perforatedprojection from the lower head of the valve-chamber within which saidstem is slidable, and by which the valve-closing spring is maintained inposition.

2. In a must-pump, open-topped cylinders, pistons reciprocating therein,and mechanism intermediate between the pistons, and crank shafts bywhich they are actuated, ports made through the pistons and aspringpressed guided valve closable from below over said ports, aremovable valve-chamber situated in line below the bottom of eachcylinder, with a passage from the cylinder into the top of thevalve-chamber, a removable lower head to the valve-chamber having anupwardly-projecting cone with a central opening therein, a semiglobularvalve by which the passage between the cylinder and the valve-chamber isclosed, said valve having a downwardly-projecting stemslidable andguided in the hole in the cone-openings connecting with the bottom ofsaid guide-hole, a spring surrounding the cone and acting to normallyclose the valve against its seat, and side discharge-openings from thevalve-chambers.

In witness whereof I have hereunto set my hand.

JAMES s. PHILPOTT.

Witnesses:

A. II. PARKER, J. F. PHILPOTT.

